Well, Paul IS a professional.
Here's what I do.
Put some lapping compound on the inserted valve. Chuck the valve stem in
your cordless screw gun, and spin it up whilst pulling the valve into the seat.
Now, THAT's a lap dance.
Before it leaked, now it doesn't.
Peter C
===
At 03:10 PM 7/28/2004, you wrote:
>Noticed in an engine book the other day the advice to fill the combustion
>chambers in the head with a solvent to see if your valves are sealing
>properly. No leakage into ports over night means all okay.
>
>I tried it with some kerosene on a head I recently rebuilt. Two chambers
>emptied into the intake ports over night. Since the intake valves and seats
>were done on a NewWay cutter and the exhausts on a Sioux grinder, I figured
>maybe they needed some lapping.
>
>Did the suction cup and grinding paste thing on all 4 intakes. Now all 4
>leaked over night!
>
>Should I use the head as-is or seek professional intervention? (I guess
>going to the list does approach "professional" in some cases).
>
>JohnD
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